If two organisms have different traits, then they probably
OA) are currently evolving
OB) have differences in their DNA
OC) do not share a common ancestor
OD) have each developed unique mutations

Examine the air pressure map. which type of line is shown on the map?

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?